"Whatever the outcome of Greece’s knife-edge referendum, Europeans must "start talking to each other again", Italian Prime Minister Matteo Renzi told a newspaper on Sunday.

"When you see a pensioner crying in front of a bank," he said referring to a striking picture taken yesterday by AFP of 77-year-old Giorgos Chatzifotiadis in Greece’s second city Thessaloniki, "you realise that a country as important for the world and its culture as Greece cannot end up like this," he told the Il Messaggero daily.

He said as soon as today’s vote was over "we must start talking to each other again – no one knows that more than (German Chancellor) Angela Merkel."

Berlin has taken a particularly hard line on Greece, accusing Athens’ radical government of walking out on negotiations by calling the referendum.

Renzi, who has tried to steer a middle course between Athens and its creditors, added, "Of course it is impossible to save Greece without the engagement of the Greek government and pension reforms, cracking down on tax evasion and a new labour market."

He insisted that Italy was not likely to be affected by fallout from any eventual Greek implosion.